1 files changed, 84 insertions, 0 deletions
diff --git a/chaos/src/delayed_logistic.hpp b/chaos/src/delayed_logistic.hpp
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+++ b/chaos/src/delayed_logistic.hpp
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+// 
+//  
+//  chaos~
+//  Copyright (C) 2004  Tim Blechmann
+//  
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//  
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//  
+//  You should have received a copy of the GNU General Public License
+//  along with this program; see the file COPYING.  If not, write to
+//  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+//  Boston, MA 02111-1307, USA.
+
+#include "map_base.hpp"
+
+// delayed logistic map: x[n+1] = alpha * x[n] * (1 - x[n-1])
+//                       0 < x[n] <  1
+//                       0 <= alpha <= 4
+// taken from E. Atlee Jackson: Perspective of nonlinear dynamics (Vol. 2)
+
+class delayed_logistic:
+	public map_base<1>
+{
+public:
+	delayed_logistic()
+	{
+		CHAOS_SYS_INIT(x, 0.5, 0);
+		CHAOS_PAR_INIT(alpha, 3.8);
+
+		m_delayed = get_x(); /* the initial state of the delay */
+	}
+
+
+
+	void m_step()
+	{
+		data_t x = m_data[0];
+		data_t alpha = CHAOS_PARAMETER(alpha);
+		data_t delayed = m_delayed;
+
+		m_delayed = x;
+		m_data[0] = alpha * x * (1.f - delayed);
+		
+	}
+	data_t m_delayed;
+
+	CHAOS_SYSPAR_FUNCS_PRED(alpha, m_pred_alpha);
+	bool m_pred_alpha(t_float f)
+	{
+		return (f > 0) && (f < 4);
+	}
+
+	CHAOS_SYSVAR_FUNCS_PRED(x, 0, m_pred_x);
+	bool m_pred_x(t_float f)
+	{
+		return (f > 0) && (f < 1);
+	}
+
+	virtual void m_verify()
+	{
+		data_t x = m_data[0];
+		if (m_pred_x(x))
+			return;
+		m_data[0] = 0.5;
+	}
+};
+
+#define DELAYED_LOGISTIC_CALLBACKS				\
+MAP_CALLBACKS;									\
+CHAOS_SYS_CALLBACKS(alpha);						\
+CHAOS_SYS_CALLBACKS(x);
+
+#define DELAYED_LOGISTIC_ATTRIBUTES				\
+MAP_ATTRIBUTES;									\
+CHAOS_SYS_ATTRIBUTE(alpha);						\
+CHAOS_SYS_ATTRIBUTE(x);
+